Nick Chanwrote a review of Goal Zero Sherpa 40 Recharger on March 31, 2019
Familiarity: I've put it through the wringer
Sleek charger that hold plenty of juice for your phone and tablet. Comes with 3 different USB charging cords. It's actually a bit larger than you might expect which is a bit annoying when travelling, but it holds enough juice so you dont have to worry about your phone or tablet going dead.